SPA step unit



FIG. 1 is a perspective view of a Spa step unit, showing our new design, the broken line showing of the Spa is for illustrative purposes only and forms no part of the claimed design.

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof; and

FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. 1; and

FIG. 6 is a cross-sectional view taken along 6--6 of FIG. 1. 

The ornamental design for a Spa step unit, as shown and described. 